/* 引入第三方或自定义的字体图标样式 */
@font-face {
  font-family: 'my-icon';
  src: url('//at.alicdn.com/t/font_1651307_mqw1i6r7js.ttf') format('truetype');
}

.my-icon {
  font-family: 'my-icon';
}

.my-icon-iconjian::before {
  content: '\e74b';
}